HERCULES 63761 Owner's Manual & Safety Instructions

Model

HA23-21

Owner’s Manual &
Safety Instructions

13 Piece Hole Saw Set

WARNING: To prevent serious injury, User must read and

understand Owner’s Manual. SAVE THIS MANUAL.

When unpacking, make sure that the product is intact and undamaged.

If any parts are missing or broken, please call 1-888-866-5797

as soon as possible. Reference 63761.

IMPORTANT SAFETY

INFORMATION

1. Wear ANSI-approved safety goggles and
heavy-duty work gloves during setup and use.

2. Set contains sharp blades.
Keep away from children.

3. Use correct size Mandrel for selected Hole Saw.

4. Verify drill’s chuck is in good

condition and fits securely.

5. Do not use excessive pressure
when cutting a hole.

6. Use as intended only;
do not modify tools.

7. Inspect before every use; do not use
if parts are loose or damaged.

8. Use both hands when drilling and
keep blade at 90° to workpiece.

9. Store saw blades in Case in secure
location away from children.

10. Read and adhere to all safety warnings and
operating instructions of drill used with Set.

11. The warnings, cautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the

operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.

SAVE THESE

INSTRUCTIONS

SPECIFICATIONS

Saw Sizes 3/4″, 7/8″, 1-1/8″, 1-3/8″, 1-1/2″,

1-3/4″, 2″, 2-1/8″, 2-1/2″

Other Pieces Large Mandrel

Small Mandrel
2 Pilot Bits
1 Hex Key

SETUP

Read the ENTIRE IMPORTANT

SAFETY INFORMATION section at the
beginning of this manual including
all text under subheadings therein
before set up or use of this product.

TO PREVENT INJURY:
Wear heavy-duty work gloves and ANSI­approved safety goggles during setup
and whenever handling the saws.

SMALL MANDREL SETUP

1. Insert Pilot Bit into Small Mandrel with the
flat strip along the bottom of the bit facing
the Hex Key hole on the Mandrel.

2. Insert Hex Key into hole and twist
clockwise to secure the Pilot Bit.

3. Select the desired size Hole Saw
for the Small Mandrel.

Note: Only the 3/4″, 7/8″, and 1-1/8″ Hole
Saws can be used for the Small Mandrel.

4. Thread Hole Saw onto Collar Thread until secure.

5. Open Jaws of Drill Chuck (sold separately).

6. Place the Mandrel Shaft completely into the
Chuck and securely tighten the Chuck.

Record Product’s Serial Number Here:

Note: If product has no serial number, record month and year of purchase instead.

Note: Replacement parts are not available.

Note: Reference UPC 792363637619.

Page 2 For technical questions, please call 1-888-866-5797. Item63761

LARGE MANDREL SETUP

Hole
Saw

1. Insert Pilot Bit into Small Mandrel with the
flat strip along the bottom of the bit facing
the Hex Key hole on the Mandrel.

2. Insert Hex Key into hole and twist
clockwise to secure the Pilot Bit.

3. Pull down the knurled Locking Collar
to retract the Locking Pins.

Locking Pins

Locking Collar

4. Thread Hole Saw onto Collar Thread until
the Locking Pins align with the Holes
in the Saw. Make sure Saw is threaded
tightly and holes are properly aligned.

Collar Thread

Hole
Saw

(Align pins with holes.)

5. Push up the knurled Locking Collar to extend the
Locking Pins through the holes in the Hole Saw.

6. Hole Saw should be secure. If loose, repeat Step 5
and make tighter while keeping holes aligned.

7. Open Jaws of Drill Chuck (sold separately).

8. Place the Mandrel Shaft completely into the
Chuck and securely tighten the Chuck.

OPERATION

1. Holding the drill at 90° to the workpiece,
set the Hole Saw on the workpiece.

2. Press the drill’s trigger to turn it on.

3. If the drill is a variable speed type, cut the
workpiece slowly until a circle groove is
made in the workpiece. Then cut faster.

4. When the hole is cut, release the trigger and
wait for Hole Saw to come to a complete stop
before removing it from the workpiece.

5. When finished, remove Hole Saw from drill’s chuck.

6. Remove Hole Saw and Mandrel from Locking
Collar and clean off with a cloth. Place Hole Saw,
Locking Collar and Mandrel back in carrying case.

7. Store Hole Saws inside case,
out of reach of children.

8. Replace the pilot drill bit if dull or
broken. Make sure the bit is securely
held in place after being reinstalled.

Page 3For technical questions, please call 1-888-866-5797.Item63761

LIMITED 90 DAY WARRANTY

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from defects in materials
and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to
damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside
our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent,
special or consequential damages arising from the use of our product. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion
may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.

To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

Email our technical support at: [e-mail]

Visit our website at: http://www.harborfreight.com

For technical questions, please call 1-888-866-5797

Copyright© 2021 by Harbor Freight Tools®. All rights reserved. No portion of this manual or

any artwork contained herein may be reproduced in any shape or form without the express

written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn

proportionally. Due to continuing improvements, actual product may differ slightly from the

product described herein. Tools required for assembly and service may not be included.

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